218823036 has 24 divisors (see below), whose sum is σ = 513012864. Its totient is φ = 72594480.

The previous prime is 218822999. The next prime is 218823037. The reversal of 218823036 is 630328812.

It is a junction number, because it is equal to n+sod(n) for n = 218822988 and 218823006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218823037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40680 + ... + 45743.

It is an arithmetic number, because the mean of its divisors is an integer number (21375536).

Almost surely, 2^218823036 is an apocalyptic number.

It is an amenable number.

218823036 is an abundant number, since it is smaller than the sum of its proper divisors (294189828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218823036 is a wasteful number, since it uses less digits than its factorization.

218823036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86641 (or 86639 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 218823036 is about 14792.6683191370. The cubic root of 218823036 is about 602.6026165442.

The spelling of 218823036 in words is "two hundred eighteen million, eight hundred twenty-three thousand, thirty-six".